software to calculate chi-squared, and plot likelihood and confidence region

Use of Cobaya. camb, CLASS, cosmomc, compilers, etc.
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hossein farajollahi
Posts: 2
Joined: November 14 2010
Affiliation: university lecturer

software to calculate chi-squared, and plot likelihood and c

Post by hossein farajollahi » November 14 2010

I need a program to compute chi squared, and plot likelihood and confidence region for my problem.
A typical calculation I need to do can be found in the following papers:

0810.4730v2 [astro-ph]

0905.4552v1 [astro-ph.

1002.1962v2 [astro-ph.

Savvas Nesseris
Posts: 77
Joined: April 05 2005
Affiliation: UAM/IFT
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software to calculate chi-squared, and plot likelihood and c

Post by Savvas Nesseris » November 14 2010

You can find a set of mathematica codes that does what you want here:
http://leandros.physics.uoi.gr/datacomp/

The code was used to generate all the figs etc in 0908.2636 . I cannot provide step by step instructions on how to use or modify the code for your project but I would be glad to answer any questions. Finally, some familiarity with Mathematica is assumed.

If you want to use the full WMAP data and not just the shift parameters, you should use cosmomc instead.

Cheers

PS If a paper comes out by using the code, a reference would be nice :)

hossein farajollahi
Posts: 2
Joined: November 14 2010
Affiliation: university lecturer

software to calculate chi-squared, and plot likelihood and c

Post by hossein farajollahi » November 14 2010

Thanks Savas. I will try.

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